Fairies, in the fantasy series Artemis Fowl by Eoin Colfer, are fictional beings, usually shorter than a human, who possess magic properties. The average height of a fairy is exactly 1 metre, one centimetre. All the fairies have retreated below the Earth to escape the destructiveness of the human race. Their underground civilization is centered on the capital city of Haven. Fairies are vernacularly known as the People, and live a life according to the Book of the People. There are 8 recognized families of fairies- Elves, Dwarves, Pixies, Gnomes, Gremlins, Goblins, Sprites and Demons. However, the centaurs have been mentioned several times, as with trolls, and the centaurs' cousins, the unicorns, were killed off, yet they are not recognized.